#pragma once

#include<iostream>
#include<string>
#include<strings.h>
#include<cstring>
#include<unistd.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include"log.hpp"
#include"protocol.hpp"

#define NUM 1024
class CalClient
{
public:
    CalClient(const std::string &serverip,const uint16_t &serverport)
    :_sock(-1),_serverip(serverip),_serverport(serverport)
    {}

    void initClient()
    {
        //1.创建套接字
        _sock=socket(AF_INET,SOCK_STREAM,0);
        if(_sock<0)
        {
            std::cerr<<"socket create error"<<std::endl;
            exit(2);
        }

        //2.bind

       

    }
    
    void start()
    {
         //3.connect 发起连接
         struct sockaddr_in server;
         memset(&server,0,sizeof(server));
         server.sin_family=AF_INET;
         server.sin_port=htons(_serverport);
         server.sin_addr.s_addr=inet_addr(_serverip.c_str());

         if(connect(_sock,(struct sockaddr*)&server,sizeof(server)) != 0)
         {
            std::cerr<<"socket connect error"<<std::endl;
         }
         else
         {
            std::string line;
            std::string inbuffer;
            while(true)
            {
                std::cout<<"mycal# ";
                std::getline(std::cin,line);//1+1
                Request req = ParseLine(line);
                std::string content;
                req.serialize(&content);//序列化
                std::string send_string = enLength(content);//带报头
                send(_sock,send_string.c_str(),send_string.size(),0);

                std::string package,text;
                if(!recvPackage(_sock,inbuffer,&package)) continue;
                //"content_len"\r\n"exitcode result"\r\n
                if(!deLength(package,&text)) continue;//去报头 "exitcode result"
                Response resp;
                resp.deserialize(text);//反序列化
                std::cout<<"exitcode: "<<resp.exitcode<<std::endl;
                std::cout<<"result: "<<resp.result<<std::endl; 

    
            }
            
         }
    }
    Request ParseLine(const std::string &line)
    {
        // 建议版本的状态机！
        //"1+1" "123*456" "12/0"
        int status = 0; // 0:操作符之前，1:碰到了操作符 2:操作符之后
        int i = 0;
        int cnt = line.size();
        std::string left, right;
        char op;
        while (i < cnt)
        {
            switch (status)
            {
            case 0:
            {
                if(!isdigit(line[i]))
                {
                    op = line[i];
                    status = 1;
                }
                else left.push_back(line[i++]);
            }
            break;
            case 1:
                i++;
                status = 2;
                break;
            case 2:
                right.push_back(line[i++]);
                break;
            }
        }
        std::cout << std::stoi(left)<<" " << std::stoi(right) << " " << op << std::endl;
        return Request(std::stoi(left), std::stoi(right), op);
    }
    ~CalClient()
    {
        if(_sock>=0)
        {
            close(_sock);  
        }
    }
private:
    int _sock;
    std::string _serverip;
    uint16_t _serverport;
};